RUAN HIGH LANES SCUBA FIELD GUIDE
A Weekend to Level Up: SSI Advanced Course at Ruan High Lanes
A three-day SSI Advanced Open Water Diver program run by Karleyth Diving that lets you sample five specialties — including Deep and Navigation — and decide which full specialties to pursue next.
A Weekend to Level Up: SSI Advanced Course at Ruan High Lanes.
Adventure brief
A Weekend to Level Up: SSI Advanced Course at Ruan High Lanes
Ruan High Lanes becomes a classroom and playground beneath the waves in Karleyth Diving’s SSI Advanced program: five open‑water training dives spread across a long weekend let you try Deep and Navigation plus three other specialties so you can taste advanced training before committing to full specialty courses.
Located in the quiet village of Ruan High Lanes in Cornwall, England, Karleyth Diving offers an immersive pathway for underwater enthusiasts to hone their skills and elevate their diving credentials. The SSI Advanced Course is a standout program tailored for divers eager to push beyond basic open water certification, offering over 20 specialty areas that deepen practical knowledge and introduce complex underwater environments.
Ruan High Lanes lies near Cornwall’s rugged coastline, known for its granite cliffs and rich tidal ecosystems. This location serves as a gateway to some of England’s most distinctive diving sites, where kelp forests sway and underwater wrecks tell stories of maritime history. Karleyth Diving harnesses this local geography to provide a hands-on learning experience that’s both challenging and profoundly rewarding.
The course is structured to build confidence across diverse diving disciplines, including navigation, night diving, deep diving, and wreck exploration. Achieving SSI Specialty Diver, Advanced Open Water Diver, and Master Diver ratings through Karleyth Diving not only boosts your skillset but also prepares you for the complexity of offshore dives around Cornwall and further afield. This progression is essential for divers looking to access the area’s less frequented reefs and dramatic underwater landscapes.
Karleyth Diving’s commitment to safety, environmental awareness, and personalized coaching distinguishes it within the UK diving scene. They emphasize responsible practices that safeguard Cornwall’s marine habitats, intertwining education with conservation. For divers in southern England seeking a next-level course with authentic locale engagement, Karleyth Diving offers an expert guide through some of the country’s most breathtaking subaquatic realms.
Route Schematic
Weekend Itinerary Schematic
A clear sequence of meetups, briefings and dives maps the three‑day flow from shore to deeper sites.
Friday — Meet & Gear Check
Meet at the dive centre in the evening (from 5:30pm) to sort gear and complete the academic session for the evening dive.
Friday Night — Dusk/Night Dive
Conduct the dusk/night open water training dive as the first practical specialty experience of the course.
Saturday — Two Open Water Dives
Meet at 9:00am for a brief academic session followed by two open water dives to practice additional specialties.
Sunday — Deep Dive & Final Dives
Meet at 8:00am to travel to the deep dive site and complete the final two open water dives, including the required deep dive; these dives may be upgraded to boat dives for a small fee purchased at checkout.
Minimum age for participation is 10 years; operators may adjust the schedule or sites as needed and boat upgrades are optional for the Sunday dives.
Highlights
Outing Highlights
Five Specialties, One Weekend
The course is structured so you complete one open‑water training dive per specialty after a briefing with your SSI instructor, giving you hands‑on experience across five different specialties without committing to full specialty courses up front.
A Compact, Skill‑Focused Weekend
Karleyth Diving runs the Advanced Open Water Diver course over a three‑day program that begins with a Friday evening dusk/night dive and continues with two dives on Saturday and two final dives — including the deep dive — on Sunday.
Upgrade Flexibility on Deep Dives
The Sunday dives, including the required deep dive, can be upgraded to boat dives for a small fee purchased at checkout, giving you the choice to extend the experience and access different sites.
What the day feels like
What the Course Feels Like
The program moves deliberately from briefing to water: an evening session and dusk/night dive opens the course, then two dives on Saturday consolidate new skills, and a final day centred on the deep dive completes the five specialty experiences — all framed to let you explore advanced training while retaining freedom to complete full specialties later.
Suitability
Who it's for
Who this course suits — and who should think twice.
Practical planner
Details to review before reserving
The course runs across a three‑day weekend; meet at Karleyth Diving dive centre for the Friday evening start so instructors can sort gear and run the initial academic session.
Bring your certification card and personal items; instructors will sort equipment during the Friday meeting as part of the program setup.
Sunday’s dives, including the deep dive, can be upgraded to boat dives for a small fee available to purchase at checkout.
Review cancellation policies before reserving.
Frequently asked questions
Planning Your Outing
How long does the SSI Advanced Course take?
The program runs over three days.
Where do we meet to start the course?
Meet at Karleyth Diving dive centre for the initial gear check and academic session on Friday evening.
How many specialties will I try during the course?
You will experience five different specialties, completing one open water training dive per specialty.
Can I upgrade any dives to boat dives?
Yes — the Sunday dives, including the deep dive, can be upgraded to boat dives for a small fee purchasable at checkout.
Is there an age minimum to join?
The minimum age to participate is 10 years old.
How this guide was prepared
This field guide is synthesized using verified supplier specifications, route descriptions, and destination data. Some booking links may generate affiliate revenue for ADV Guides.
- Verified: 2026-08-07T13:10:04.947Z
Some booking links may generate revenue for ADV Guides or The Adventure Collective.
Availability, pricing, schedules and operating details can change.
Trip details and contextual sources were reviewed by ADV Guides Editorial.